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Bulletin of the Psychonomic Society

, Volume 10, Issue 6, pp 463–466 | Cite as

Information reduction, internal transformations, and task difficulty

  • Bruce A. Ambler
  • Sebastiano A. Fisicaro
  • Robert W. Proctor
Article

Abstract

Three experiments investigated the effects of information reduction and number of internal transformations in determining task difficulty. The primary dependent variable examined was pupil dilation. In Experiment 1, pupil size was found to increase with increases in amount of information reduction. However, number of internal transformations was confounded with information reduction. In Experiment 2, when information reduction was held constant, it was found that increasing the number of internal transformations resulted in increased pupil size. In Experiment 3, when number of internal transformations was held constant but amount of information reduction was varied, no differences in pupil dilation were found. It was concluded that the usual increase in task difficulty observed with increases in information reduction is due to increases in the number of internal transformations that must be performed.

Keywords

Task Difficulty Pupil Dilation Pupil Size Error Score Male Voice 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. Ambler, B. A., Fisicaro, S. A., & Proctor, R. W. Temporal characteristics of primary-secondary message interference in a dichotic listening task. Memory & Cognition, 1976, 4, 709–716.CrossRefGoogle Scholar
  2. Bradshaw, J. L. Pupil size and problem solving. Quarterly Journal of Experimental Psychology, 1968, 20, 116–122.PubMedCrossRefGoogle Scholar
  3. Garner, W. R. The processing of information and structure. Potomac, Md: Erlbaum, 1974.Google Scholar
  4. Hess, E. H., & Polt, J. M. Pupil size in relation to mental activity during simple problem-solving. Science, 1964, 143, 1190–1192.PubMedCrossRefGoogle Scholar
  5. Kahneman, D. Attention and effort. Englewood Cliffs, N.J: Prentice-Hall, 1973.Google Scholar
  6. Keele, S. W. Effects of input and output modes on decision time. Journal of Experimental Psychology, 1970, 85, 157–164.CrossRefGoogle Scholar
  7. Posner, M. I. Information reduction in the analysis of sequential tasks. Psychological Review, 1964, 71, 491–504.PubMedCrossRefGoogle Scholar

Copyright information

© The Psychonomic Society, Inc. 1977

Authors and Affiliations

  • Bruce A. Ambler
    • 1
  • Sebastiano A. Fisicaro
    • 2
  • Robert W. Proctor
    • 3
  1. 1.Department of PsychologyUniversity of Texas at ArlingtonArlington
  2. 2.Western Kentucky UniversityBowling Green
  3. 3.Auburn UniversityAuburn

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